Finding the Fourth Proportional to 1,643,672.57, 2,268,316.56 and 918,521.99
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Solution
The fourth proportional to 1,643,672.57, 2,268,316.56 and 918,521.99 is: 1,267,587.40
Step by Step Solution
- Step 1: Write the proportion equation
1,643,672.57 : 2,268,316.56 = 918,521.99 : x - Step 2: Convert to fraction form
1,643,672.57/2,268,316.56 = 918,521.99/x - Step 3: Cross multiply
1,643,672.57x = 2,268,316.56 × 918,521.99 - Step 4: Simplify right side
1,643,672.57x = 2,083,498,629,299.57 - Step 5: Solve for x
x = 2,083,498,629,299.57/1,643,672.57 - Step 6: Final answer
x = 1,267,587.40
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.